dear friend ,
this is a case of BLUNT TRAUMA
may cause miosis
i.e.small size of pupil or mydriasis
i.e. pupillary dilation .blurring of vision is due to corneal oedema .black eye is due to seepage of blood under lid .please go for ophthalmic chequeup .you can take COLD SPONGING and further treatment will start complete chqueup .thank you .